This paper describes a two tier architecture for high speed data distribution. The architecture consists of a database interface network which distributes information from a central database to a number of servers, and a user interface network which distributes information from the servers to the user terminals. The database interface network uses the Selective Broadcast technique to distribute data on a high speed channel. Analytical results and design examples showed that Selective Broadcast technique can provide an order of magnitude smaller response time under normal traffic conditions when compared to the nonselective broadcast technique such as the DatacycleTM system